School of Chemistry and Molecular Engineering, China.
Shanghai Songjiang Institute for Food and Drug Control, 28 Middle Zhongshan Road, Shanghai, 201600, China.
Chemosphere. 2018 Dec;212:937-945. doi: 10.1016/j.chemosphere.2018.09.003. Epub 2018 Sep 3.
Adsorption is recognized as one of the most efficient approaches for antibiotics removal from water. Inspired by the enzyme-substrate interaction model, we proposed induced-fit adsorption (IFA) model, and rationally designed and fabricated diol-based porous organic polymers (POPs) as adsorbents for tetracycline (TC) removal. For 2,3-naphthalenediol-based POP (NTdiol-POP), the preferable geometry of diol-groups contributed to the high binding energy with TC species and flexible methylene linkages between neighboring rigid naphthalene rings gave rise to precisely matching between TC species and adsorbents, that is, the induced-fit conformation change. As a result, NTdiol-POP exhibited a high saturated adsorption capacity of 155.8 mg g. More importantly, NTdiol-POP exhibited excellent TC removal efficiencies in both concentrated solution (96% for 4 p.p.m) and trace level solution (97% for 250 p.p.b).
吸附被认为是去除水中抗生素最有效的方法之一。受酶-底物相互作用模型的启发，我们提出了诱导契合吸附（IFA）模型，并合理设计和制备了二醇基多孔有机聚合物（POPs）作为吸附剂，用于去除四环素（TC）。对于 2,3-萘二酚基 POP（NTdiol-POP），二醇基团的优选几何形状有助于与 TC 物种形成高结合能，并且相邻刚性萘环之间的柔性亚甲基键导致 TC 物种与吸附剂之间的精确匹配，即诱导契合构象变化。结果，NTdiol-POP 表现出 155.8 mg g 的高饱和吸附容量。更重要的是，NTdiol-POP 在浓溶液（4 ppm 时去除率为 96%）和痕量水平溶液（250 ppb 时去除率为 97%）中均表现出优异的 TC 去除效率。
